If the landing light is inoperative during the day, is the aircraft considered airworthy?

The aircraft is considered airworthy even if the landing light is inoperative during the day. This is because the regulations specify that landing lights are primarily required for night operations or when visibility conditions are low, such as during inclement weather or in certain specific scenarios like flying in controlled airspace at night. During daylight operations, the absence of a landing light does not impede the aircraft’s ability to operate safely, as there are typically sufficient natural light conditions for visibility.

Thus, the aircraft maintains its airworthiness status even with the landing light inoperative, as long as all other required equipment and systems meet the necessary airworthiness standards. The airworthiness requirement is focused on ensuring safe operation under the conditions of the flight, and in daytime, the landing light is not a critical safety item.